Question

Write a Java program to input any string . convert all upper case character into lower case character and lower case character into upper case.​

Answer 1

Answer:

Program:

public class changeCase {

public static void main(String[] args) {

String str1="Great Power";

StringBuffer newStr=new StringBuffer(str1);

for(int i = 0; i < str1. length(); i++) {

//Checks for lower case character.

if(Character. isLowerCase(str1. charAt(i))) {

//Convert it into upper case using toUpperCase() function.

Explanation:

The toUpperCase() method converts a string to upper case letters. Note: The toLowerCase() method converts a string to lower case letters.

Answer 2

Answer:

public class changeCase {

public static void main(String[] args) {

String str1="Great Power";

StringBuffer newStr=new StringBuffer(str1);

for(int i = 0; i < str1. length(); i++) {

//Checks for lower case character.

if(Character. isLowerCase(str1. charAt(i))) {

//Convert it into upper case using to uppercase () function

Explanation:

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